David L. Lawrence Convention Center green roofing and waterproofing solutions from Siplast

Pennsylvania

David L. Lawrence Convention Center

Single-source solution for a complex waterproofing, vegetated roofing, amenity, and roofing project

  • Category

    Overburden Solutions
  • Completed

    2020
  • Type

    Institutional Building
  • Size

    1,500 squares

Challenge

Located in downtown Pittsburgh, along the Allegheny River, the David L. Lawrence Convention Center (DLCC) became the country's first LEED (Leadership in Energy and Environmental Design) GOLD-certified convention center upon completion in 2003, according to the U.S. Green Building Council. This 1,500,000-square-foot exhibition, convention, and event space hosts upwards of 600,000 visitors spread across roughly 200 events in any given year.

A few years after the structure was completed, the roof terraces had been plagued with persistent leaks and water intrusion issues. Rather than repairing the damage, DLCC ownership took the opportunity to redesign the roof terraces. The goal was to resolve the existing issues, while also creating an inviting outdoor space where convention attendees could step outside, connect with nature, and enjoy a biophilic break.

Solution

DLCC staff collaborated with various architecture firms to systematically repair sections of the roof, initiating a process that has spanned the past two decades. For the rooftop terrace, Pittsburgh-based Indovina Associates Architects sought a highly experienced provider specializing in waterproofing, vegetated roofing, and roofing solutions. They needed a reliable partner with deep industry expertise who could serve as a single point of contact and navigate complex challenges throughout the extensive renovation. Siplast proved to be the ideal choice to fulfill these requirements.

The roof terrace renovation began in April 2019, involving a comprehensive range of solutions to address various challenges across the project. This included waterproofing, roofing, vegetated and amenity systems for plaza decks, conventional roofs, and stairways. Pedestrian traffic areas were upgraded with a reinforced traffic coatings system, while a specialized flashing system provided an effective gutter solution for water run-off. The service station roofs utilized a durable, modified bitumen approach for reliable protection. Siplast single-source overburden solutions, including concrete pavers, wood tiles, and vegetated roofing assemblies, enhanced durability and aesthetics above the waterproofing membrane. Wood paver assemblies, which met stringent code requirements, ensured stability for the rooftop terrace during high wind conditions. In vegetated roof areas, layered assemblies were installed to support agriculture and greenery.

By leveraging multiple systems sourced from one manufacturer, Siplast served as a one-stop solution for the project's complex waterproofing, vegetated roofing, amenity, and roofing needs. This streamlined approach eliminated the need for multiple suppliers and ensured seamless integration. By simplifying the process, Siplast helped enhance efficiency while delivering a high-quality, durable result that benefited the building owner, architect, and installers.